CN109461508B - Helium mass spectrum leakage detection suction gun device for high-temperature gas cooled reactor heat transfer pipe - Google Patents
Helium mass spectrum leakage detection suction gun device for high-temperature gas cooled reactor heat transfer pipe Download PDFInfo
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- CN109461508B CN109461508B CN201811574793.2A CN201811574793A CN109461508B CN 109461508 B CN109461508 B CN 109461508B CN 201811574793 A CN201811574793 A CN 201811574793A CN 109461508 B CN109461508 B CN 109461508B
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- 238000012546 transfer Methods 0.000 title claims abstract description 31
- 239000007789 gas Substances 0.000 title claims abstract description 25
- 239000001307 helium Substances 0.000 title claims abstract description 24
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 24
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 238000001819 mass spectrum Methods 0.000 title claims abstract description 10
- 238000007689 inspection Methods 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims description 97
- 230000001360 synchronised effect Effects 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000009659 non-destructive testing Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/017—Inspection or maintenance of pipe-lines or tubes in nuclear installations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/222—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for tubes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- General Physics & Mathematics (AREA)
- Manipulator (AREA)
Abstract
The invention belongs to the technical field of nondestructive testing and maintenance of steam generator heat transfer pipes and similar heat transfer equipment, and particularly relates to a helium mass spectrum leakage detection gun device of a high-temperature gas cooled reactor heat transfer pipe, which is matched with an inspection device to realize the helium leakage detection work of the high-temperature gas cooled reactor steam generator heat transfer pipe. The method is characterized in that: the dual-suction-gun type tube plate leakage inspection device has the lifting function, can completely accommodate the whole throttling resistance piece, adopts a dual-suction-gun structure, and can perform leakage inspection on two tube plate holes at one time.
Description
Technical Field
The invention belongs to the technical field of nondestructive testing and maintenance of steam generator heat transfer pipes and similar heat transfer equipment, and particularly relates to a helium mass spectrum leakage detection suction gun device of a high-temperature gas cooled reactor heat transfer pipe.
Background
The high temperature gas cooled reactor is an advanced unit which is developed independently in China and utilizes a new generation nuclear power technology, the inspection technology and inspection equipment of the heat transfer pipe of the steam generator are directions which need to be developed greatly in the future, and because the steam generator is completely different from a conventional pressurized water reactor, the operation environment and the structure, particularly the structure of a pipe plate are different, and the corresponding detection technology and special detection equipment are not available at present. The high-temperature gas cooled reactor steam generator heat transfer tube structure is also different from a conventional pressurized water reactor, is a spiral coil, has small bending radius, cannot be inspected by using the conventional heat transfer tube vortex detection mode at present, is a feasible inspection scheme, and is characterized in that helium mass spectrometry inspection is implemented, a steam generator heat transfer tube automatic inspection device is used for carrying a helium inspection suction gun device to connect the suction gun with the heat transfer tube according to a planned path, tightness is maintained, helium is pumped to a helium transfer mass spectrometer leak detector, and the helium concentration of an instrument is analyzed, so that whether leakage exists in each heat transfer tube is inspected.
Disclosure of Invention
The heat transfer pipe of the high-temperature gas cooled reactor steam generator is a spiral coil, the bending radius is small, the high-temperature gas cooled reactor steam generator cannot be checked by using an eddy current detection mode, and a throttling component is arranged in a water chamber of the high-temperature gas cooled reactor steam generator.
The invention is realized in the following way:
the utility model provides a high temperature gas cooled reactor heat transfer pipe helium mass spectrum leak hunting suction gun device, possesses the lift function, can hold whole throttle resistance spare completely, and suction gun device adopts the double suction gun structure, once only can leak the inspection to two tube sheet holes.
The suction gun device mainly comprises a lifting mechanism, an angle adjusting mechanism and a quick-change mechanism; the angle adjustment is realized through the transmission of the first synchronous belt, and the lifting function is realized through the two-stage transmission of the second synchronous belt and the screw rod; the lower end part of the suction gun is provided with a buffer spring, the suction gun can continue to run under the drive of the second motor after rising to the top end and contacting with the tube plate surface, and the buffer spring can be compressed due to the fact that the suction gun is limited by the tube plate, and the top end of the suction gun is tightly attached to the tube plate of the evaporator due to the spring pressure provided by the buffer spring; the end face sealing piece is arranged on the suction gun, so that the impact of the suction gun on the tube plate can be reduced while the sealing is realized, and the soft contact is realized.
The lifting mechanism is arranged on the flange at the upper end of the rotating shaft of the angle adjusting mechanism; the lifting mechanism mainly comprises a second motor, a screw rod, a suction gun, an end face sealing piece, an upper end cover, a proximity switch, a guide rail, a first pulley box, a lifting mechanism base, a cable connector, a rotating nut, a flange bearing, a spring, a screw rod nut, an air pipe connector, a first synchronous pulley, a second synchronous pulley and a ball bearing, wherein the second motor transmits torque to the screw rod through the second synchronous belt, the guide rail is a hollow cylinder with a vertical guide groove at the center, the proximity switch is arranged on the guide rail to prevent the screw rod nut from overtravel, and the screw rod nut can move up and down under the drive of the screw rod, so that the lifting function of the suction gun is realized; meanwhile, a cable connector is further arranged on the first pulley box and used for connecting the motor, the encoder and the limit switch with a communication cable.
The rotating nut is arranged at the end part of the screw rod at the top end of the lifting mechanism and can rotate along with the screw rod, when the power failure condition occurs, if the suction gun is just in a lifting state, the suction gun can be manually retracted by screwing the rotating nut when the throttling resistance piece is sleeved.
The suction gun device has an angle adjusting function, when the suction gun device detects different tube plate holes, the included angles between the central connecting lines of the two suction guns and the guide rail of the inspection device are different, and the angle adjusting mechanism comprises a bearing end cover, a crossed roller bearing, a third synchronous pulley, a pulley shaft, a sliding bearing, an angle adjusting mechanism base, a first synchronous belt, a first motor, a motor driving pulley and a second pulley box; the angle adjusting mechanism drives the first motor to transmit torque through the first synchronous belt, and the third synchronous belt pulley is directly connected with the lifting mechanism through a bolt and bears axial force in the vertical direction through a crossed roller bearing; the angle adjusting mechanism drives the whole lifting mechanism to rotate under the action of the first motor, so that the angle adjustment of the gun sucking device is realized; the second belt wheel box is provided with a mechanical limiting mechanism and an origin switch, the mechanical limiting mechanism is realized by a movable stop block capable of swinging, and a fixed stop block is arranged on a base of the lifting mechanism.
When the lifting mechanism moves to the position of +180 degrees, the movable stop block swings to the positive limit position and stops the lifting mechanism from continuously rotating forwards; conversely, when the lifting mechanism of the suction gun device moves to the position of-180 degrees, the movable stop block swings to the negative limit position and stops the lifting mechanism from continuously reversing; therefore, the angle adjusting mechanism can realize 360-degree full-coverage adjustment, and the cable winding caused by uniform rotation in one direction can be avoided.
The quick-change mechanism of the gun sucking device mainly comprises a gun sucking device base, a rotating chuck, a chuck fixing block, a locking pin, a positioning pin, a horizontal guide rail sliding block and the like; the quick-change structure mainly realizes quick and stable connection with a helium mass spectrum inspection device of the high-temperature gas cooled reactor; the horizontal guide rail sliding block is installed on the inspection device, the horizontal guide rail sliding block is fixedly provided with 3 positioning pins and 3 locking pins, a corresponding pin hole is formed in the base of the gun sucking device, the chuck fixing block penetrates through the rotating chuck and is connected with the base of the gun sucking device through 3 bolts, and the rotating chuck can rotate around the chuck fixing block and is provided with a kidney-shaped hole.
The waist-shaped hole has a variable hole size, and is in a loose state at the large-aperture end and in a locked state at the small-aperture end.
When the gun sucking device is in quick connection with the horizontal guide rail sliding block, the pin hole of the gun sucking device is aligned with the positioning pin of the horizontal guide rail sliding block, and after the locking pin is inserted into the positioning pin hole, the rotary chuck is poked to realize quick locking between the gun sucking device and the horizontal guide rail sliding block of the manipulator positioning device.
The beneficial effects of the invention are as follows:
1. the suction gun device has a lifting function, can completely accommodate the whole throttling resistance piece, adopts a double suction gun structural design for improving the leakage detection efficiency, and can perform leakage detection on two tube plate holes at one time. The suction gun device mainly comprises three parts: lifting mechanism, angle adjustment mechanism and quick change mechanism.
2. The spring pressure that buffer spring provided makes suction gun top and evaporimeter tube sheet closely laminate, in order to guarantee the gas tightness of the suction gun of helium detection in the suction process. The end face sealing piece is arranged on the suction gun, so that the impact of the suction gun on the tube plate can be reduced while the sealing is realized, and the soft contact is realized.
3. In the lifting mechanism, a motor and a screw rod transmit torque through a synchronous belt, a screw rod guide rail is a hollow cylinder body with a vertical guide groove at the center, a limit switch is arranged on the screw rod guide rail to prevent the overtravel of a nut, and the screw rod nut moves up and down under the driving of a trapezoidal screw rod to realize the lifting function of the suction gun.
4. The screw rod end at the top end of the lifting mechanism is provided with a rotary nut, the rotary nut can rotate along with the screw rod, when the power failure and the like occur, if the suction gun is in a lifting state, the suction gun can be manually retracted by screwing the rotary nut when the throttle resistance piece is sleeved.
5. The angle adjusting mechanism drives the synchronous belt to transmit torque through a motor, and the synchronous belt wheel is directly connected with the lifting mechanism through bolts and bears axial force in the vertical direction through crossed roller bearings. The angle adjusting mechanism drives the whole lifting mechanism to rotate under the action of the motor, so that the angle adjustment of the suction gun device is realized. The angle adjusting mechanism of the suction gun device can also adopt a motor to drive a right-angle speed reducer to realize angle adjustment.
6. The mechanical limiting mechanism in the angle adjusting mechanism is realized by a movable stop block capable of swinging within a certain angle, and a fixed stop block is arranged on the base of the lifting mechanism. When the lifting mechanism moves to the position of +180 degrees, the movable stop block swings to the positive limit position and stops the lifting mechanism from continuously rotating forwards; conversely, when the lifting mechanism of the suction gun device moves to the position of-180 degrees, the movable stop block swings to the negative limit position and stops the lifting mechanism from continuing to rotate reversely. Therefore, the angle adjusting mechanism can realize 360-degree full-coverage adjustment, and the cable winding caused by uniform rotation in one direction can be avoided.
7. When the gun sucking device is in quick connection with the horizontal guide rail slide block, the pin hole of the gun sucking device is aligned with the positioning pin of the horizontal guide rail slide block, and after the locking pin is inserted into the positioning pin hole, the rotary chuck is poked to realize quick locking between the gun sucking device and the horizontal guide rail slide block of the machine inspection device. The waist-shaped hole of the rotary chuck is changed in size, and is in a loose state at the large-aperture end and in a locking state at the small-aperture end.
Drawings
FIG. 1 is a schematic diagram of a helium mass spectrometer leak detection suction gun device of a high temperature gas cooled reactor heat transfer tube according to the present invention;
FIG. 2 is a functional schematic diagram of a helium mass spectrometer leak detection gun device of a high temperature gas cooled reactor heat transfer tube according to the present invention;
FIG. 3 is a schematic view of the elevating mechanism of the present invention;
FIG. 4 is a schematic view of the angle adjusting mechanism of the present invention;
FIG. 5 is a mechanical limit map of the angle adjustment mechanism of the present invention;
FIG. 6 is a schematic structural view of a quick change mechanism of the suction gun device of the present invention;
FIG. 7 is a schematic view of the dual suction gun motion of the present invention;
fig. 8 is an installation view of the suction gun device of the present invention.
Wherein: 1. the hydraulic control system comprises a hydraulic control system, a hydraulic control system and a hydraulic control system, wherein the hydraulic control system comprises a hydraulic control system, a hydraulic control system and a hydraulic control system.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1 to 7, the high-temperature gas cooled reactor heat transfer tube helium mass spectrum leakage detection gun device has a lifting function, can completely accommodate the whole throttling resistance piece, and can perform leakage inspection on two tube plate holes at one time by adopting a double gun structural design in order to improve leakage detection efficiency. The suction gun device 1 mainly comprises three parts: lifting mechanism 2, angle adjustment mechanism 3 and quick change mechanism 4. The basic principle is that the angle adjustment is realized through the transmission of the first synchronous belt 6, and the lifting function is realized through the two-stage transmission of the second synchronous belt 8 and the screw rod 9. Meanwhile, a spring 20 with a buffer function is arranged at the lower end part of the suction gun 10, after the suction gun 10 rises to the top end and is contacted with the tube plate surface, the suction gun can continue to run under the drive of the second motor 7, the buffer spring 20 can be compressed due to the fact that the suction gun 10 is limited by the tube plate, the top end of the suction gun 10 is tightly attached to the tube plate of the evaporator due to the spring pressure provided by the buffer spring 20, and in order to ensure the air tightness of the suction gun 10 in the suction process of helium detection. The suction gun 10 is provided with the end face sealing piece 11, so that the impact of the suction gun on the tube plate can be reduced while the sealing is realized, and the soft contact is realized.
The lifting mechanism 2 is arranged on the flange at the upper end of the rotating shaft of the angle adjusting mechanism 3. The lifting mechanism 2 mainly comprises a second motor 7, a lead screw 9, a suction gun 10, an end face sealing piece 11, an upper end cover 12, a proximity switch 13, a guide rail 14, a first pulley box 15, a lifting mechanism base 16, a cable connector 17, a rotating nut 18, a flange bearing 19, a spring 20, a lead screw nut 21, an air pipe connector 22, a first synchronous pulley 23, a second synchronous pulley 24, a ball bearing 25 and the like, wherein the second motor 7 transmits torque to the lead screw 9 through the second synchronous belt 8, the guide rail 14 is a hollow cylinder with a vertical guide groove at the center, the proximity switch 13 is arranged on the guide rail 14 to prevent the lead screw nut 21 from overtraveling, and the lead screw nut 21 can move up and down under the driving of the lead screw 9, so that the lifting function of the suction gun 10 is realized. Meanwhile, the first pulley box 15 is also provided with a cable connector 17 for connecting the motor, the encoder and the limit switch with a communication cable.
The rotating nut 18 is arranged at the end part of the screw rod 9 at the top end of the lifting mechanism 2, and can rotate along with the screw rod 12, when the power failure and other conditions occur, if the suction gun 10 is just in a lifting state, the suction gun 10 can be manually retracted by screwing the rotating nut 18 when the throttling resistance member is sleeved.
The suction gun device 1 has an angle adjusting function, and when the suction gun device 1 detects different pipe holes, the included angles between the central connecting lines of the two suction guns 10 and the guide rails of the inspection device are different, and the angle adjusting mechanism 3 mainly comprises a bearing end cover 26, a crossed roller bearing 27, a third synchronous pulley 28, a pulley shaft 29, a sliding bearing 30, an angle adjusting mechanism base 31, a first synchronous belt 6, a first motor 5, a motor driving pulley 32, a second pulley box 33 and the like. The angle adjusting mechanism 3 drives the first motor 5 to transmit torque through the first synchronous belt 6, and the third synchronous pulley 28 is directly connected with the lifting mechanism 2 through bolts and bears axial force in the vertical direction through the crossed roller bearing 27. The angle adjusting mechanism 3 drives the whole lifting mechanism 2 to rotate under the action of the first motor 5, so that the angle adjustment of the gun sucking device 1 is realized. The angle adjusting mechanism can also adopt the form of a right-angle speed reducer to realize the angle adjustment of the suction gun. The second pulley box 33 is provided with a mechanical limit mechanism 35 and an origin switch 34, the mechanical limit mechanism 35 is realized by a movable stop block capable of swinging within a certain angle, and a fixed stop block is arranged on the base of the lifting mechanism 2. When the lifting mechanism 2 moves to the +180 DEG position, the movable stop block swings to the positive limit position and stops the lifting mechanism from continuously rotating forwards; conversely, when the lifting mechanism of the suction gun device moves to the-180 DEG position, the movable stop block swings to the negative limit position and stops the lifting mechanism 2 from continuing to rotate reversely. Therefore, the angle adjusting mechanism can realize 360-degree full-coverage adjustment, and the cable winding caused by uniform rotation in one direction can be avoided.
The quick-change mechanism of the gun sucking device mainly comprises a gun sucking device base 36, a rotating chuck 37, a chuck fixing block 38, a locking pin 39, a positioning pin 40, a horizontal guide rail sliding block 41 and the like. The quick-change structure mainly realizes quick and stable connection with the helium mass spectrum inspection device of the high-temperature gas cooled reactor. The horizontal guide rail slide block 41 is installed on the inspection device, the horizontal guide rail slide block 41 is fixedly provided with 3 positioning pins 40 and 3 locking pins 39, the gun sucking device base 36 is provided with corresponding pin holes, the chuck fixing block 38 penetrates through the rotary chuck to be connected with the gun sucking device base 36 through 3 bolts, and the rotary chuck 37 can rotate around the chuck fixing block 38 and is provided with waist-shaped holes. The waist-shaped hole has a variable hole size, and is in a loose state at the large-aperture end and in a locking state at the small-aperture end. When the gun device 1 is in quick connection with the horizontal guide rail slide block 41, the pin hole of the gun device 1 is aligned with the positioning pin 40 of the horizontal guide rail slide block 41, and after the locking pin 39 is inserted into the positioning pin hole, the rotary chuck 37 is shifted to realize quick locking between the gun device 1 and the horizontal guide rail slide block 41 of the manipulator positioning device.
The working principle of the invention is as follows:
as shown in fig. 8, after the suction gun device is installed on the inspection device, the control system calculates the minimum time consumption path of the next tube plate hole to be detected according to the current suction gun real-time position, and the inspection device moves the suction gun to the position right below the tube plate hole to be detected under the cooperation of the suction gun angle adjusting mechanism. Because the suction gun device adopts a double suction gun structural design, as shown in fig. 7, leakage inspection can be carried out on two tube plate holes at one time, and the two suction guns are distributed in a mode of spacing 1 tube plate hole. The axis of the current real-time position lifting mechanism is aligned with the No. 2 tube plate Kong Zhouxin, the suction guns simultaneously detect the No. 1 tube plate holes and the No. 3 tube plate holes, after the suction guns are positioned, the suction guns are lifted to be attached to the tube plate and sealed, and the double suction gun structure in the suction gun device 1 is aligned with the No. 1 tube plate holes and the No. 3 tube plate holes respectively for suction detection; if the number of the next tube plate hole to be detected is 4# and 6# tube plate holes, the high-temperature gas cooled reactor heat transfer tube inspection device needs to carry the suction gun device through rotation and displacement movement, the axis of the lifting mechanism of the suction gun device is aligned with the axis of the 5# tube hole, and the high-temperature gas cooled reactor heat transfer tube inspection device rotates, so that 4# and 6# heat transfer tubes are inspected, the suction gun is positioned by reversely rotating corresponding angles through the angle adjusting mechanism, and the positioning of the 4# and 6# heat transfer tubes is completed. At the moment, a machine vision auxiliary suction gun positioning system is started, a camera measures and calculates the deviation between the center points of two suction guns and the center of a positioning tube plate hole, the deviation value is transmitted to a motor driving functional module in an upper computer, and the motor combined action eliminates the suction gun positioning error before the suction gun is lifted; after the auxiliary positioning task is completed, the lifting mechanism drives the suction gun to integrally lift until the front end of the suction gun is completely attached and sealed with the tube plate hole to be detected. According to the steps and the planned paths, the inspection work of all the heat transfer tubes can be completed.
While the embodiments of the present invention have been described in detail, the present invention is not limited to the embodiments described above, and various modifications may be made without departing from the spirit of the present invention, within the knowledge of those skilled in the art. The invention may be practiced otherwise than as specifically described in the specification.
Claims (5)
1. A helium mass spectrum leakage detection gun device of a high-temperature gas cooled reactor heat transfer tube is characterized in that: the device has the lifting function, can completely accommodate the whole throttling resistance piece, adopts a double-suction gun structure for the suction gun device (1), can perform leakage inspection on two tube plate holes at one time, adopts a mode layout of spacing 1 tube plate hole for the two suction guns,
the suction gun device (1) mainly comprises a lifting mechanism (2), an angle adjusting mechanism (3) and a quick-change mechanism (4); the angle adjustment is realized through the transmission of the first synchronous belt (6), and the lifting function is realized through the two-stage transmission of the second synchronous belt (8) and the screw rod (9); the lower end part of the suction gun (10) is provided with a buffer spring (20), after the suction gun (10) rises to the top end and is contacted with the tube plate surface, the suction gun can continue to run under the drive of the second motor (7), and the buffer spring (20) can be compressed due to the fact that the suction gun (10) is limited by the tube plate, and the top end of the suction gun (10) is tightly attached to the evaporator tube plate due to spring pressure provided by the buffer spring (20); the suction gun (10) is provided with an end face sealing piece (11), so that the impact of the suction gun on the tube plate can be reduced while the sealing is realized, the soft contact is realized,
the lifting mechanism (2) is arranged on a flange at the upper end of the rotating shaft of the angle adjusting mechanism (3); the lifting mechanism (2) mainly comprises a second motor (7), a screw rod (9), a suction gun (10), an end face sealing piece (11), an upper end cover (12), a proximity switch (13), a guide rail (14), a first pulley box (15), a lifting mechanism base (16), a cable connector (17), a rotating nut (18), a flange bearing (19), a spring (20), a screw rod nut (21), an air pipe connector (22), a first synchronous pulley (23), a second synchronous pulley (24) and a ball bearing (25), wherein the second motor (7) transmits torque to the screw rod (9) through the second synchronous belt (8), the guide rail (14) is a hollow cylinder with a vertical guide groove at the center, the proximity switch (13) is arranged on the guide rail (14) to prevent the screw rod nut (21) from exceeding, and the screw rod nut (21) can move up and down under the driving of the screw rod (9) to realize the lifting function of the suction gun (10); meanwhile, a cable connector (17) is also arranged on the first pulley box (15) and is used for connecting a motor, an encoder and a limit switch with a communication cable,
the end part of the screw rod (9) at the top end of the lifting mechanism (2) is provided with a rotary nut (18) which can rotate along with the screw rod (9), when the power-off condition occurs, if the suction gun (10) is just in a lifting state, and when the throttling resistance piece is sleeved, the suction gun (10) can be manually retracted by screwing the rotary nut (18),
the suction gun device (1) has an angle adjusting function, when the suction gun device (1) detects different tube plate holes, the central connecting line of two suction guns (10) is different from the guide rail included angle of the inspection device, and the angle adjusting mechanism (3) comprises a bearing end cover (26), a crossed roller bearing (27), a third synchronous pulley (28), a pulley shaft (29), a sliding bearing (30), an angle adjusting mechanism base (31), a first synchronous belt (6), a first motor (5), a motor driving pulley (32) and a second pulley box (33); the angle adjusting mechanism (3) drives the first motor (5) to transmit torque through the first synchronous belt (6), and the third synchronous belt pulley (28) is directly connected with the lifting mechanism (2) through bolts and bears axial force in the vertical direction through the crossed roller bearing (27); the angle adjusting mechanism (3) drives the whole lifting mechanism (2) to rotate under the action of the first motor (5) so as to realize the angle adjustment of the suction gun device (1); the second pulley box (33) is provided with a mechanical limiting mechanism (35) and an origin switch (34), the mechanical limiting mechanism (35) is realized by a movable stop block capable of swinging, and a fixed stop block is arranged on the base of the lifting mechanism (2).
2. The helium mass spectrometer leak detection and suction gun device for the high-temperature gas cooled reactor heat transfer pipe according to claim 1, wherein the device is characterized in that: when the lifting mechanism (2) moves to the position of +180 degrees, the movable stop block swings to the positive limit position and stops the lifting mechanism from continuously rotating forwards; conversely, when the lifting mechanism of the suction gun device moves to the position of-180 degrees, the movable stop block swings to the negative limit position and stops the lifting mechanism (2) from continuously reversing; therefore, the angle adjusting mechanism can realize 360-degree full-coverage adjustment, and the cable winding caused by uniform rotation in one direction can be avoided.
3. The helium mass spectrometer leak detection and suction gun device of the high temperature gas cooled reactor heat transfer pipe according to claim 2, wherein the device is characterized in that: the quick-change mechanism of the gun sucking device mainly comprises a gun sucking device base (36), a rotating chuck (37), a chuck fixing block (38), a locking pin (39), a positioning pin (40), a horizontal guide rail sliding block (41) and the like; the quick-change structure mainly realizes quick and stable connection with a helium mass spectrum inspection device of the high-temperature gas cooled reactor; the horizontal guide rail sliding block (41) is arranged on the inspection device, 3 positioning pins (40) and 3 locking pins (39) are fixed on the horizontal guide rail sliding block (41), corresponding pin holes are formed in the base (36) of the gun sucking device, the chuck fixing block (38) penetrates through the rotary chuck to be connected with the base (36) of the gun sucking device through 3 bolts, and the rotary chuck (37) can rotate around the chuck fixing block (38) and is provided with kidney-shaped holes.
4. The helium mass spectrometer leak detection and suction gun device for the high-temperature gas cooled reactor heat transfer pipe according to claim 3, wherein the device comprises the following components: the hole size of the waist-shaped hole is changed, and the waist-shaped hole is in a loose state at the large-aperture end and in a locking state at the small-aperture end.
5. The helium mass spectrometer leak detection and suction gun device for the high-temperature gas cooled reactor heat transfer pipe according to claim 3, wherein the device comprises the following components: when the gun sucking device (1) is connected with the horizontal guide rail sliding block (41) rapidly, the pin hole of the gun sucking device (1) is aligned with the positioning pin (40) of the horizontal guide rail sliding block (41), and after the locking pin (39) is inserted into the positioning pin hole, the rotary chuck (37) is shifted to realize rapid locking between the gun sucking device (1) and the horizontal guide rail sliding block (41) of the manipulator positioning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574793.2A CN109461508B (en) | 2018-12-21 | 2018-12-21 | Helium mass spectrum leakage detection suction gun device for high-temperature gas cooled reactor heat transfer pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574793.2A CN109461508B (en) | 2018-12-21 | 2018-12-21 | Helium mass spectrum leakage detection suction gun device for high-temperature gas cooled reactor heat transfer pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109461508A CN109461508A (en) | 2019-03-12 |
| CN109461508B true CN109461508B (en) | 2024-03-19 |
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| CN201811574793.2A Active CN109461508B (en) | 2018-12-21 | 2018-12-21 | Helium mass spectrum leakage detection suction gun device for high-temperature gas cooled reactor heat transfer pipe |
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